s390/qeth: use to_delayed_work()

Avoid poking around in the delayed_work struct's internals.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Julian Wiedmann 2020-08-27 10:16:59 +02:00 • committed by David S. Miller
commit beaadcc647